Product Name: Investment Casting Grade Fused Silica Grains 50-100mesh Model NO.: fused silica grains Type: Fused Silica Sand Application: Rubber, Plastic, Chemical, metallurgy, Ceramic, Casting, Glass, Powder Coating Certification: Third Party Sio2: >99.85% Fe2o3: <0.006% Xrd Test Result: Amorhous Transport Package: Plastic Woven Bag,Paper Bag,25kg Net Each,Pallet Specification: 50-100mesh Origin: China Lianyungang HS Code: 32074000 Product Description Investment Casting Grade Fused Silica Specifications:1.Physical Properties1.1CompositionSiO21.2StructureAmorphous1.3ColourTransparent or white1.4Melting Temperature approx.1750ºC1.5Specific Gravity2.21g/cm31.6Hardness 7 Mohs1.7Thermal Expansion 0.5*10-62.Chemical Properties Investment Casting Grade2.1SiO2>99.85%2.2Al2O3<100ppmThe finer the power,the higher the Al2O3,as powder is produced by ball mill with Alumina ball.2.3Fe2O3<60ppm for grains<100ppm for powder2.4CaO<30ppm2.5Na2O<30ppm2.6K2O<30ppm3. Particle Size DistributionStandard10-2030-5050-100-120-200-325MeshMicrons+82360<2+1217006-25+16118033-50+2085025-45<1+306001325-40+4042532-45+5030015-30<13+7021230-60+801800-11<1+10015028-51<10<1+1401064-167-13<10+20075<210-15<10<3+3254514-2015-304-11Pan<3<2<145-5570-8086-97*Pan designates the percentage of fused silica passing the last reported screen for each size.Fused Silica Pictures:Package and Delivery:Paper bagsPlastic Woven Bag of 25kg Net each,Then on Pallet:Factory and Quality Control Pictures: